An assist device 12 for and method for using the assist device for exiting a zero turn lawn mower 16 or adjusting a cutting deck height of a zero turn lawn mower 16 having an operator deck 36 and an operator seat proximate the operator deck 36 wherein the assist device 12 is attached and extends upwardly from the deck 36 and is positioned forward of the operator seat and comprises a hand hold section 26 for gripping to aid an operator in reaching a standing, position on the operator deck 36. The device 12 is secured to the top surface of the riding lawn mower wherein the base 16 of the assist device 12 is adapted for connection with an angled surface such that the device 12 remains in an upright position allowing the operator to grip the device 12 along the hand hold section 26 to assist the operator in positioning on the mower 16, entering and/or exiting the mower 16 and adjusting the height of the cutting deck 18.